<?php

namespace think\admin;

class File
{
  /**
   * @param $dir
   * @return bool
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: mk_dir
   * @describe:目录名
   */
  public static function mk_dir($dir)
  {
    $dir = rtrim($dir, '/') . '/';
    if (!is_dir($dir)) {
      if (mkdir($dir, 0700, true) == false) {
        return false;
      }
      return true;
    }
    return true;
  }

  /**
   * @param $filename
   * @return bool|false|string
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: read_file
   * @describe:读取文件内容
   */
  public static function read_file($filename)
  {
    $content = '';
    if (function_exists('file_get_contents')) {
      @$content = file_get_contents($filename);
    } else {
      if (@$fp = fopen($filename, 'r')) {
        @$content = fread($fp, filesize($filename));
        @fclose($fp);
      }
    }
    return $content;
  }



  /**
   * @param $filename
   * @param $writetext
   * @param string $openmod
   * @return bool
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: write_file
   * @describe:写文件
   */
  public static function write_file($filename, $writetext, $openmod = 'w')
  {
    if (@$fp = fopen($filename, $openmod)) {
      flock($fp, 2);
      fwrite($fp, $writetext);
      fclose($fp);
      return true;
    } else {
      return false;
    }
  }

  /**
   * @param $dirName
   * @return bool
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: del_dir
   * @describe:删除目录
   */
  public static function del_dir($dirName)
  {
    if (!file_exists($dirName)) {
      return false;
    }
    $dir = opendir($dirName);
    while ($fileName = readdir($dir)) {
      $file = $dirName . '/' . $fileName;
      if ($fileName != '.' && $fileName != '..') {
        if (is_dir($file)) {
          self::del_dir($file);
        } else {
          unlink($file);
        }
      }
    }
    closedir($dir);
    return rmdir($dirName);
  }

  /**
   * @param $surDir
   * @param $toDir
   * @return bool
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: copy_dir
   * @describe:复制目录
   */
  public static function copy_dir($surDir, $toDir)
  {
    $surDir = rtrim($surDir, '/') . '/';
    $toDir = rtrim($toDir, '/') . '/';
    if (!file_exists($surDir)) {
      return false;
    }

    if (!file_exists($toDir)) {
      self::mk_dir($toDir);
    }
    $file = opendir($surDir);
    while ($fileName = readdir($file)) {
      $file1 = $surDir . '/' . $fileName;
      $file2 = $toDir . '/' . $fileName;
      if ($fileName != '.' && $fileName != '..') {
        if (is_dir($file1)) {
          self::copy_dir($file1, $file2);
        } else {
          copy($file1, $file2);
        }
      }
    }
    closedir($file);
    return true;
  }

  /**
   * @param $dir
   * @return array
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: get_dirs
   * @describe: 列出目录
   */
  public static function get_dirs($dir)
  {
    $dir = rtrim($dir, '/') . '/';
    $dirArray[][] = null;
    if (false != ($handle = opendir($dir))) {
      $i = 0;
      $j = 0;
      while (false !== ($file = readdir($handle))) {
        if (is_dir($dir . $file)) {
          //判断是否文件夹
          $dirArray['dir'][$i] = $file;
          $i++;
        } else {
          $dirArray['file'][$j] = $file;
          $j++;
        }
      }
      closedir($handle);
    }
    return $dirArray;
  }

  /**
   * @param $dir
   * @return false|int
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: get_size
   * @describe:统计文件夹大小
   */
  public static function get_size($dir)
  {
    $dirlist = opendir($dir);
    $dirsize = 0;
    while (false !== ($folderorfile = readdir($dirlist))) {
      if ($folderorfile != "." && $folderorfile != "..") {
        if (is_dir("$dir/$folderorfile")) {
          $dirsize += self::get_size("$dir/$folderorfile");
        } else {
          $dirsize += filesize("$dir/$folderorfile");
        }
      }
    }
    closedir($dirlist);
    return $dirsize;
  }

  /**
   * @param $dir
   * @return bool
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: empty_dir
   * @describe:检测是否为空文件夹
   */
  public static function empty_dir($dir)
  {
    return (($files = @scandir($dir)) && count($files) <= 2);
  }

  /**
   * @param $name
   * @param string $value
   * @param $path
   * @param bool $cached
   * @return array|bool|int|mixed|string
   * @author: LuckyHhy <jackhhy520@qq.com>
   * @date: 2020/3/18
   * @name: cache
   * @describe:文件缓存与文件读取
   */
  public function cache($name, $value = '', $path = RUNTIME_PATH, $cached = true)
  {
    static $_cache = array();
    $filename = $path . $name . '.php';
    if ('' !== $value) {
      if (is_null($value)) {
        // 删除缓存
        return false !== strpos($name, '*') ? array_map("unlink", glob($filename)) : unlink($filename);
      } else {
        // 缓存数据
        $dir = dirname($filename);
        // 目录不存在则创建
        if (!is_dir($dir)) {
          mkdir($dir, 0755, true);
        }

        $_cache[$name] = $value;
        return file_put_contents($filename, strip_whitespace("<?php\treturn " . var_export($value, true) . ";?>"));
      }
    }
    if (isset($_cache[$name]) && $cached == true) {
      return $_cache[$name];
    }

    // 获取缓存数据
    if (is_file($filename)) {
      $value = include $filename;
      $_cache[$name] = $value;
    } else {
      $value = false;
    }
    return $value;
  }


  /**
   * 读取文件夹下的所有文件
   * @param $path
   * @param $basePath
   * @return array|mixed
   */
  public static function readDirAllFiles($path, $basePath = '')
  {
    list($list, $temp_list) = [[], scandir($path)];
    empty($basePath) && $basePath = $path;
    foreach ($temp_list as $file) {
      if ($file != ".." && $file != ".") {
        if (is_dir($path . DIRECTORY_SEPARATOR . $file)) {
          $childFiles = self::readDirAllFiles($path . DIRECTORY_SEPARATOR . $file, $basePath);
          $list = array_merge($childFiles, $list);
        } else {
          $filePath = $path . DIRECTORY_SEPARATOR . $file;
          $fileName = str_replace($basePath . DIRECTORY_SEPARATOR, '', $filePath);
          $list[$fileName] = $filePath;
        }
      }
    }
    return $list;
  }
}
